Hi,

 

I have picked up a WhatsOn 3A Power Supply that plugs into the mains. Will that work ok with the FT818nd as it can deliver 3A continuous. Dont want to plug it in just in case without confirmation :-)

 

Thanks

Tony

From the user manual 

 

 

Current Consumption: Squelched: 250 mA (Approx.)

Receive: 450 mA

Transmit: 2.4 A (HF/145 MHz), 2.7 A (430 MHz)

 

You're good to go.

 

G4MAD 

Splendid

Hi Tony,

 

The current rating looks adequate though marginal.  Hopefully it will be RF quiet as well.  If you have RFI from it look into the Pro Audio Engineering Kx33, as far as we know it is the only supply specifically designed to power communications equipment.  A lot more info as well as a special offer for the FT-817/818 group here.

 

Cheers & 73,
Howie / WA4PSC

Pro Audio Engineering

Providing the Watson 13V at 3A, and 5A peak, power supply is a linear one with a black case and two screw trerminals on the front panel, then it SHOULD be the same as I have to run my FT-817 or other low power rigs.

I also use several of these to power various parts of the computer network around the house. They generate no switching noise and at 2.5A peak they only get moderately warm.

These Watson PSU's can be susceptible to RF interference, I found out this when an old mobile telephone going off close by caused the output voltage to jump around. Since then I've fitted a long (~10mm) ferrite bead on each wire going to the output terminals and a 1nF capacitor from each terminal to chassis, to every one of these to pass through my shack.
If the 'finger type' terminal-turret screws get loose and one tries to replace them with european ones, ones finds the chassis holes are too big. I've instead filed out the holes in the panel and fitted short pieces of barrier strip, 

 

Just make sure the voltage output is set at at between 12.5-13V and stays there, with only a small droop (~0.2V) occuring at top loads.